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6. Commissioning
6.1 General
The Grant SpiraVac system should be commissioned as part as the overall commissioning of the Grant
Spira boiler to which it is fitted. Reference must be made to Section 10 of the main Installation instructions
supplied with the boiler.
IMPORTANT
BEFORE attempting to prime the pellet hopper auger (as covered in Section 10.7 of the Installation &
Servicing instructions provided with the boiler) it is essential to first transfer pellets from the bulk store into
the pellet hopper using the SpiraVac system
6.2 Procedure
To commission the vacuum system for the first time follow the procedure below:
1.
Check the electrical supply to the hopper/boiler is isolated, i.e. switched off at the fused isolator.
2.
Check the boiler ON/STANDBY switch to STANDBY.
3.
Set the ‘VACUUM SYSTEM’ switch (on the SpiraVac control panel) to OFF.
4.
Check that both flexible system tubes are correctly fitted between the vacuum unit and auger
unit. Refer to Section 4.3 for details.
5.
Check that there is a sufficient quantity of pellets in the bulk pellet store.
6.
Switch the electrical isolator (on the auger unit) to ON.
7.
Switch on the electrical supply to the hopper/boiler at the fused isolator.
8.
Switch the ‘VACUUM SYSTEM’ switch to ON. The vacuum unit should now start and pellets will
delivered to the pellet hopper from the bulk store. Refer to the User Instructions (in Section 8 of
these Instructions) for further details.
The first time the Grant SpiraVac system is switched on, as described above, it will operate several times
until the hopper is filled with pellets up to the level of the counterweighted trap door of the vacuum unit. In
this condition the trap door will be prevented from closing by the pellets. This is intentional as further
operation of the vacuum system is not required with this amount of pellets in the hopper. Once this has
been done the vacuum system will automatically stop.
The SpiraVac system is now operational and will automatically operate to re-fill the pellet hopper when the
pellet level in the pellet hopper falls to the minimum level.
NOTE
Every time the ‘VACUUM SYSTEM’ switch is switched OFF and then back to ON, the SpiraVac system will
operate and fill the pellet hopper up to the level of the counterweighted trap door of the vacuum unit,
irrespective of the pellet level in the hopper at that time.
Summary of Contents for WPVKIT10
Page 12: ...12 Figure 3 6 SpiraVac operation flow diagram ...
Page 22: ...22 Figure 5 4 Vacuum unit wiring diagram ...
Page 24: ...24 Figure 5 6 Heating system controls S plan type system connection diagram ...
Page 25: ...25 Figure 5 7 Heating system controls Y plan type system connection diagram ...